Juniper 1000BASE-T Copper SFP Transceiver — 100m RJ-45

The Juniper SFP-1G-T-C is a 1000BASE-T copper SFP transceiver delivering 1GbE over standard Cat5e/Cat6 copper cabling up to 100m via RJ-45 connector — Juniper-coded for use in Juniper EX, MX, QFX, and SRX platforms, enabling copper GbE connectivity in SFP fiber port slots without rewiring to fiber infrastructure.

Key Features

• 1000BASE-T copper SFP enabling GbE over Cat5e/Cat6 in Juniper fiber SFP ports
• RJ-45 connector for direct connection to copper patch panels and structured cabling
• Juniper-coded (SFP-1G-T-C) for recognized, warning-free operation on Juniper platforms
• Up to 100m reach — standard GbE copper cable distance
• No fiber infrastructure required — use existing copper cabling in SFP-equipped ports

Product Specifications

• Part Number: SFP-1G-T-C
• Manufacturer: Juniper Networks
• Form Factor: SFP
• Speed: 1GbE (1000BASE-T)
• Connector: RJ-45
• Cable Type: Cat5e / Cat6 copper
• Max Distance: 100m

Transceiver & Interface Specifications

• Auto-negotiation: Yes (10/100/1000 Mbps)
• Duplex: Full duplex
• Power Consumption: Typically 0.7W
• DDM/DOM: No (copper transceivers do not support optical DDM)
• Operating Temperature: 0°C to 70°C (commercial)

Use Cases

• Adding copper GbE uplinks to Juniper switches and routers with SFP fiber port slots
• Connecting Juniper EX/QFX/MX/SRX ports to copper-cabled servers, APs, or devices
• Temporary or flexible copper connectivity in fiber SFP ports without permanent rewiring
• Mixed fiber/copper deployments where specific ports require RJ-45 copper access

Compatibility

• Compatible with Juniper EX, MX, QFX, and SRX platforms with standard SFP GbE ports
• Requires Cat5e or Cat6 copper cable with RJ-45 connectors up to 100m
• IEEE 802.3ab 1000BASE-T compliant
• Not compatible with SFP+ 10GbE ports (use JNP-SFPP-10GE-T for 10GBASE-T copper SFP+)

Frequently Asked Questions

Why would I use a copper SFP instead of a built-in RJ-45 port?

Copper SFPs enable GbE copper connectivity in dedicated SFP fiber uplink ports on switches and routers that do not have built-in RJ-45 ports for those slots — useful for connecting to copper-cabled devices without requiring a media converter or rewiring to fiber.

Does the SFP-1G-T-C support PoE pass-through?

No — copper SFP transceivers do not support PoE pass-through. PoE requires dedicated PoE circuitry on the switch port itself. The SFP-1G-T-C provides standard GbE copper connectivity only.

What is the difference between SFP-1G-T-C and 740-083295?

Both are Juniper 1000BASE-T copper SFPs with RJ-45 connectors, but the SFP-1G-T-C uses the Juniper alphanumeric part number, while 740-083295 uses the numeric designation. They are functionally equivalent — choose based on your ordering system's preferred part number format.

The Juniper SFP-1G-T-C bridges the gap between fiber SFP ports and copper cabling infrastructure — enabling standard Cat5e/Cat6 GbE connectivity in Juniper fiber SFP slots with Juniper coding for recognized platform operation across EX, MX, QFX, and SRX deployments.